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草业学报 ›› 2012, Vol. 21 ›› Issue (5): 107-113.

• 研究论文 • 上一篇    下一篇

3种生态型野生扁蓿豆种质资源ISSR与SSR遗传多样性分析

李鸿雁1,李志勇1*,师文贵1,蔡丽艳1,张静萍2   

  1. 1.中国农业科学院草原研究所 农业部沙尔沁牧草资源重点野外科学观测试验站, 内蒙古 呼和浩特 010010;
    2.内蒙古大学交通学院,内蒙古 呼和浩特 010021
  • 收稿日期:2011-09-15 出版日期:2012-05-25 发布日期:2012-10-20
  • 通讯作者: E-mail:zhiyongli1216@126.com
  • 作者简介:李鸿雁(1964-),女,辽宁锦州人,副研究员,博士。
  • 基金资助:
    农业部农作物种质资源保护与利用项目“多年生牧草更新复壮与利用”(NB2011-2130135-33)和农业部牧草种质资源保护项目“牧草温带备份库的维护与备份繁殖入库”(2010-43)资助。

The genetic diversity of three ecological Medicago ruthenica germplasms revealed by ISSR and SSR

LI Hong-yan1, LI Zhi-yong1, SHI Wen-gui1, CAI Li-yan1, ZHANG Jing-ping2   

  1. 1.Key Laboratory of Grassland Resources and Ecology Ministry of Agriculture, Grassland Research Institute of the Chinese Academy of Agriculture Science, Hohhot 010010, China;
    2.Traffic College of Inner Mongolia University, Inner Mongolia University, Hohhot 010021, China
  • Received:2011-09-15 Online:2012-05-25 Published:2012-10-20

摘要: 遗传多样性的量化与分类是收集和利用种质资源的重要前提。运用SSR和ISSR技术分析扁蓿豆种质资源的遗传多样性。从供试材料中筛选到具有多态性的SSR引物18对,ISSR引物18条。SSR引物共扩增到109条清晰的多态性条带,多态性比率为80.09%,相似系数变化范围为0.669~0.885。ISSR引物共扩增到125条清晰的多态性条带,多态性比率为87.08%,相似系数变化范围为0.448~0.811。对2种标记结果进行UPGMA聚类分析,结果表明,扁蓿豆材料部分聚为1类,黄花扁蓿豆材料大部分聚为1类。Mantel检测显示,2种标记的遗传相似性呈显著相关(r=0.019 6,t=0.121 2),扁蓿豆比黄花扁蓿豆的遗传多样性水平稍高,细叶扁蓿豆之间的遗传差异较大。

Abstract: Quantitative and classification was based on germplasm collection and utilization. The genetic diversity of 14 wild Medicago ruthenica was assessed by screening with 18 pairs of SSR and 18 ISSR primers. SSR primers amplified 109 clear polymorphic bands, and the polymorphism rate was 80.09% with a similarity coefficient ranging from 0.669 to 0.885. ISSR primers amplified 125 polymorphic bands and the polymorphism ratio was 87.08% with a similarity coefficient ranging from 0.448 to 0.811. UPGMA (Unweighted Pair Group Method with Arithmetic mean) cluster analysis based on two markers showed that part of the M. ruthenica material grouped into one group. Mantel tests showed that the genetic similarity of two markers had a significant correlation (r=0.019 6, t=0.121 2). Compared with yellow M. ruthenica genetic diversity levels, those of M. ruthenica were higher. The genetic difference was highest in M. ruthenica var. oblongifolia.

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